He studied drama at the University of Winchester and Liverpool John Moores University before beginning his career as a storyline writer on the Granada Television series Springhill. From there, he moved to Coronation Street, after which he was the story editor on Emmerdale and a writer on the relaunched Randall & Hopkirk (Deceased) as well as Swiss Tony and Swinging.
A huge fan of Doctor Who since his childhood, this series has influenced a great deal of his career, beginning with a number of spin-off novels in the 1990s and graduating to being a writer of six episodes of the programme following its successful return in 2005. He also wrote eighteen episodes of the televised spin-off The Sarah Jane Adventures (starring Elisabeth Sladen) as well as a video game and a number of "Tardisodes". When he was a storyliner on Coronation Street, he jumped at one of a series of names suggested for Mike Baldwin's new knicker factory and it was duly christened "Underworld", that also being the name of a Doctor Who story broadcast in January 1978 starring Tom Baker.
Other television series written by him include Wizards vs. Aliens, Jekyll & Hyde and The Librarians.
Episodes storylined by Gareth Roberts
1997 (155 episodes)
- All episodes between Episode 4152 (2nd March 1997) and Episode 4155 (7th March 1997)
- All episodes between Episode 4168 (30th March 1997) and Episode 4287 (24th October 1997)
- All episodes between Episode 4296 (9th November 1997) and Episode 4326 (31st December 1997)
1998 (57 episodes)